EP2072823B1 - Pompe centrifuge dotée d'une déaération - Google Patents

Pompe centrifuge dotée d'une déaération Download PDF

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Publication number
EP2072823B1
EP2072823B1 EP08021509.8A EP08021509A EP2072823B1 EP 2072823 B1 EP2072823 B1 EP 2072823B1 EP 08021509 A EP08021509 A EP 08021509A EP 2072823 B1 EP2072823 B1 EP 2072823B1
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EP
European Patent Office
Prior art keywords
separation chamber
pump
chamber
venting
pump according
Prior art date
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Application number
EP08021509.8A
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German (de)
English (en)
Other versions
EP2072823A2 (fr
EP2072823A3 (fr
Inventor
Thomas Müller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wilo SE
Original Assignee
Wilo SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wilo SE filed Critical Wilo SE
Publication of EP2072823A2 publication Critical patent/EP2072823A2/fr
Publication of EP2072823A3 publication Critical patent/EP2072823A3/fr
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Publication of EP2072823B1 publication Critical patent/EP2072823B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D9/00—Priming; Preventing vapour lock
    • F04D9/001—Preventing vapour lock
    • F04D9/002—Preventing vapour lock by means in the very pump
    • F04D9/003—Preventing vapour lock by means in the very pump separating and removing the vapour

Definitions

  • the invention relates to a centrifugal pump with a flowed through by the liquid to be conveyed, arranged in the flow direction in front of the pump chamber separation chamber, wherein the separation chamber is formed substantially cylindrical with a vertical axis, to form a liquid cyclone in the separation chamber of the liquid inlet has a tangential orientation, and Separation chamber has an upper central vent.
  • the object of the invention is to improve the separation chamber upstream of a centrifugal pump in such a way that with small external dimensions a high venting performance can be achieved.
  • This object is achieved in that the upper vent of the separation chamber is surrounded by a tube which projects down into the separation chamber and that the separation chamber is connected to the pump chamber via a channel, the goes off the side of the separation chamber at the level of the tube and opens at the suction port of the pump impeller.
  • a low volume of the separation chamber can be achieved with high venting performance, so that the overall external dimensions of the venting device and the pump are low. Also, a particularly early and safe separation of the gas bubbles is achieved from the liquid.
  • the length of the tube is 1 ⁇ 4 to 1 ⁇ 2 of the height of the separation chamber, preferably at least the height of the entrance of the channel.
  • the upper vent opening of the separation chamber leads to a ventilation chamber arranged above the separation chamber, wherein an automatic venting takes place.
  • the upper venting chamber may have a float which can be dismantled upwards.
  • the housing of the venting device in particular the separation chamber is integrally connected to the housing of the pump, so that the pump and the venting device form a unit is particularly advantageous.
  • the liquid inlet of the separation chamber has at least one guide surface guiding the liquid and the liquid inlet of the separation chamber is arranged on its underside and stationary guide vanes have in particular a guide vane ring.
  • a particularly stable cyclone is produced in the separation chamber and, moreover, the outer dimensions are reduced since a lateral inflow is not required.
  • the inlet of the separation chamber is arranged on its underside and in this case forms the suction nozzle of the pump.
  • a centrifugal pump 1 which is used in particular for circulating the heating water in heating systems, has within a pump housing 2 a spiral space 3, in which a pump impeller 1a is mounted.
  • the pump impeller can be driven by an electric motor, not shown, which can be fastened with its motor housing to a connection surface 4 of the housing 2.
  • a coaxial to the pump impeller 5 opens at the suction port of the pump impeller 1a, so that the pump 1 promotes from the channel 5 to the discharge nozzle 6, which is connected to the spiral space 3.
  • the discharge nozzle 6 is arranged on the upper side of the pump with a preferably vertical axis and has an external thread 7.
  • a ventilation device 8 is laterally formed with its housing 9, so that the two housings 2, 9 are in one piece.
  • the housing 9 forms a lower separation chamber 10, in which the incoming liquid in particular water forms a cyclone, so that the space 10 can also be called a "cyclone chamber”.
  • the separation chamber 10 has a lower liquid inlet 11, whose cross section is circular and corresponds to the cross section of the separation chamber 10. In this case, the inlet 11 goes down into the suction nozzle 12, which simultaneously forms the suction nozzle of the pump.
  • a vane ring 13 is coaxially mounted near the lower liquid inlet 11 and thus close to the suction nozzle 12, wherein the guide vanes 14 annularly surround a central, aerodynamically shaped body.
  • the guide vanes 14 move or rotate, but solely by the suction of the liquid is formed by the cyclone.
  • the opening 16 is surrounded by a central coaxial tube 17, which is open at the bottom and thus projects down into the space 10 to safely receive the gas bubbles accumulating in the center of the cyclone and to lead upwards into a venting chamber 18.
  • the length of the tube (17) 1 ⁇ 4 to 1 ⁇ 2 height of the separation chamber, preferably at least the height of the inlet 20 of the channel 5.
  • a float 19 is mounted for automatic venting.
  • the parts 11 to 19 are arranged coaxially to each other.
  • the freed from the air bubbles liquid passes through an upper, arranged on the separation chamber 10 outlet opening 20 in a horizontal channel 5, which connects the separation chamber 10 with the spiral space 3, wherein the channel 5 opens at the suction opening of the pump impeller.
  • the axis of the pressure port 6 is arranged parallel to the axis of the suction nozzle 12 and the separation chamber 10, so that a simple attachment in pipes is made possible.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (8)

  1. Pompe centrifuge (1) comprenant une chambre de séparation (10) parcourue par le liquide à refouler, disposée dans la direction d'écoulement avant la chambre de pompe (3),
    - la chambre de séparation (10) étant réalisée essentiellement sous forme cylindrique avec un axe vertical,
    - l'entrée de liquide, pour former un cyclone de liquide dans la chambre de séparation (10), présentant une orientation tangentielle, et
    - la chambre de séparation (10) présentant une ouverture de désaérage centrale supérieure (16),
    caractérisée en ce que l'ouverture de désaérage supérieure (16) de la chambre de séparation (10) est entourée par un tube (17) qui pénètre vers le bas dans la chambre de séparation (10) et en ce que la chambre de séparation (10) est connectée à l'espace de pompe (3) par le biais d'un canal (5) qui part latéralement de la chambre de séparation à la hauteur du tube (17) et qui débouche au niveau de l'ouverture d'aspiration du rotor de pompe.
  2. Pompe selon la revendication 1, caractérisée en ce que la longueur du tube (17) représente un quart à la moitié de la hauteur de la chambre de séparation (10), de préférence au moins la hauteur de l'entrée (20) du canal (5).
  3. Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce que l'entrée (11) de la chambre de séparation (10) forme la tubulure d'aspiration (12) de la pompe (1) ou est proche de la tubulure d'aspiration (12) de la pompe (1).
  4. Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce que l'ouverture de désaérage supérieure (16) de la chambre de séparation (10) conduit à une chambre de désaérage (18) disposée au-dessus de la chambre de séparation.
  5. Pompe selon la revendication 4, caractérisée en ce que la chambre de désaérage supérieure (18) présente un flotteur (19) qui peut être démonté vers le haut.
  6. Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce que le boîtier (9) du dispositif de désaérage notamment de la chambre de séparation (10) est connecté d'une seule pièce au boîtier (2) de la pompe (1).
  7. Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce que l'entrée de liquide de la chambre de séparation (10) présente au moins une surface conductrice (14) conduisant le liquide.
  8. Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce que l'entrée de liquide (11) de la chambre de séparation (10) est disposée au niveau de son côté inférieur et présente au moins une aube directrice fixe (14), en particulier une couronne d'aubes directrices (13) .
EP08021509.8A 2007-12-18 2008-12-11 Pompe centrifuge dotée d'une déaération Active EP2072823B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200710061558 DE102007061558A1 (de) 2007-12-18 2007-12-18 Kreiselpumpe mit Entlüftung

Publications (3)

Publication Number Publication Date
EP2072823A2 EP2072823A2 (fr) 2009-06-24
EP2072823A3 EP2072823A3 (fr) 2014-06-25
EP2072823B1 true EP2072823B1 (fr) 2018-08-08

Family

ID=40210450

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08021509.8A Active EP2072823B1 (fr) 2007-12-18 2008-12-11 Pompe centrifuge dotée d'une déaération

Country Status (2)

Country Link
EP (1) EP2072823B1 (fr)
DE (1) DE102007061558A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH710814A2 (de) * 2015-03-03 2016-09-15 Imi Hydronic Eng Switzerland Ag Vorrichtung zur Entgasung einer Flüssigkeit.
CN114893393B (zh) * 2022-04-21 2024-05-17 北京太阳宫燃气热电有限公司 一种燃气锅炉给水泵的排气装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6404199A (fr) * 1964-04-17 1965-10-18
DE1653725A1 (de) * 1967-09-29 1972-01-13 Hanning Elektro Werke Umwaelzpumpe fuer Heizungsanlagen
EP0027179B1 (fr) * 1979-09-13 1984-07-18 Joh. Vaillant GmbH u. Co. Pompe avec dégazeur
SE420230C (sv) * 1980-10-20 1987-11-16 Sala International Ab Anordning for pumpning av skummande vetskor
DE8102304U1 (de) * 1981-01-30 1981-07-02 Grundfos A/S, 8850 Bjerringbro Pumpe mit typenschild
DE3109918C2 (de) * 1981-03-14 1989-03-16 Wilo-Werk Gmbh & Co Pumpen- Und Apparatebau, 4600 Dortmund Flüssigkeitspumpe mit Gasabscheidekammer
DE3703434A1 (de) 1987-02-05 1988-08-18 Oplaender Wilo Werk Gmbh Kreiselpumpe mit entlueftung
AT389236B (de) * 1987-11-03 1989-11-10 Trawoeger Werner Abscheider
DE19743062A1 (de) 1997-09-30 1999-04-01 Wilo Gmbh Vorrichtung zum Abscheiden von Luft

Also Published As

Publication number Publication date
EP2072823A2 (fr) 2009-06-24
DE102007061558A1 (de) 2009-06-25
EP2072823A3 (fr) 2014-06-25

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